Explanation:

Let’s break it down option by option:

- Option 1: Levi-Strauss

Famous for structural anthropology. He talks about deep structures in culture—binary oppositions (dichotomies) and also about triadic relationships (like the structure in kinship systems, where you get a three-way relationship: self, other, third).

Uses dichotomization and triadization to explain the formation of social structures.

- Option 2: M. Fortes

Big on kinship and African societies, but he didn’t propose this specific model of social structure with dichotomies and triads.

- Option 3: S.F. Nadel

He focused on social roles and the functions of actors in social systems—not exactly on dichotomy/triadization as the core for social structure.

- Option 4: Marion J. Levy

Levy wrote about social systems and modernization, but not through this lens of role/relationship dichotomies and triads.